draw_self();
if (flash == 1)
{
    if (flashtimer == 0)
        flashalpha = 1;
    flashtimer++;
    if (flashtimer > 6)
    {
        flashalpha *= 0.9;
        if (flashalpha < 0.01)
        {
            flash = 0;
            flashtimer = 0;
        }
    }
    draw_sprite_ext(sprite_index, 1, x, y, image_xscale, image_yscale, image_angle, image_blend, flashalpha);
}